Warp stop-motion.



E. H. RYON.

WARP STOP MDTION.

, AFPLrcATloN FILED JULY 2.1917. l 9 6 gq 59 Patented June 4, 1918.

2 SHEETS-SHEET l.

llllll E. H. RYON.

WARP STOP MOTION. y APPLlcATloN m50 JuLY 2.1911.

l ,26, l 59 l Patentedlune 4, 1918.

2 SHEETSfSHEET 2.

SETTS.

ETTS, ASSIGNOR T0 CROlVIPTON @a KN OWLES CHUSETTS, A CORPORATION OF MASSACHU- WARP STOP-MOTION.

Specication of Letters Patent.

Patented .1 une 4, 1913..

Application filed Ju1y 2, 1917. Serial No. 178,114.

To all wle-0m z' may concern.'

Be it known that I, EPPA H. RYON, a citizen of the United States, residing at VVaL tham, in the county of Middlesex and State of Massachusetts, have invented a new and useful Warp Stop-Motion, of which the following is a specification. y

This invention relates to a warp stop motion of the mechanical type.

It is the general object of my invention to provide a warp stop motion of this type in which power-actuated devices are provided vfor engaging and drawing downward a fallen drop wire, thus rendering operative the loom stopping mechanism controlled thereby.

Inthe preferred form said devices comprise a pair of parallel horizontal rollers positioned adjacent each other and beneath the drop wires, said rollers being continuously rotated through suitabledriving connections.

`An important feature of my invention re* lates to the provisionof a -depressible indicating bar for each bank of drop wires, movable downwardly whenever any one of the wires is engaged by said rollers, and connections by which the loom stopping mechanism is rendered operative through downward `movement of said indicating bars or any one 0f them.

VAnother feature of my invention relates to the provision of drop wires which are roughened or toothed at their lower ends, thereby increasing'the effectiveness of the rollers.

Further features of my invention relate to arrangements and combinations of parts which will be hereinafter described p and more particularly pointed out in the appended claims. Y

A preferred form of my invention is shown in the drawings, in which` Figure 1 is a front elevation of my irnproved stop motion;

Fig. 2 is a right-hand side parts shown in Fig. 1; j

Fig. 3 is a partial plan view of the stop motion; Fig. 4 isa diagrammatic view showing the operation of the stop motion, and

Fig. 5 is a View of a modified form of drop wire.

`Referring to the drawings, my improved sto motion is supported Aby end frames 10 and 11 adjustable in the direction of the warp threads upon L-shaped rods`12 which elevation of the the arms 42 are l tation of the rolls.

`in turn are adjustable transversely of the warp threads in supports 13. These supports are vertically adjustable in brackets 14 secured to the loom sides 15.

The end frames 10 and 11 are connected by side bars 16 and 17, these side bars inclosing the drop wires.- The separate banks of wires are kept apart by light rods 18 secured to the end rames 10 and 11 by screws 19. While only two banks of wires are shown in the drawings, it will be understood that the capacity of the stop motion can be increased by spacing the side bars 16 and 17 farther apart and providing additional separator wires 18.

The frame 10 supports a bearing stud 20 on which is pivotally mounted a bell crank 21. A link 22 is pivoted on a stud 23 secured in the upstanding arm 24 of the bell crank 21, and a rod 25 pivoted to the outer end of the long arm of the bell crank 21 is connected to control loom stopping mechanism not shown. The end frame 10 1s provided with an upwardly extending arm 30 to which a link 3l is pivoted by a stud 32. Detachable indicating bars 33 and 34 (Figs. l and 3) are supported on studs 35 and 36 fixed in the ends of the links 22 and 31 respectively. The ends of the bars are so formed that the bars may be readily removed upwardly when so desired, the outline of these connections bcing shown in dotted lines in Fig. 1. A sepa rate indicating bar is of course provided for each bank of drop wires.

The weight of the bell crank 21, rod 25 and the parts connected thereto are such that the bars 33 and 34 are normally maintained in the position shown in Fig. 1, or in the position of the bar 33 in Fig. 4.

The frames 10 and l1 are extended downwardly to form open-sided bearings 40 for a roller 41 rotatably mounted therein. A swinging arm 42 is pivoted to each frame 10 and 11 and is moved yieldingly toward the roller 40 by a spring 43. At their lower ends provided with open-sided bearings for a second roller 44 extending parallel and adjacent the roller 41. Intermeshing gears 45 carried by the rollers 4l and 441insure simultaneous and opposite ro- The roll 41 may be actuated by any suitable driving mechanism and is shown in the drawings as provided with a pulley 46 driven by a belt 47 from the b012- tom shaft of the loom (not shown),

pressing said bar, and loom stopping devices controlled by said bar, said rollers being formed of resilient material and being corrugated longitudinally.

A warp stop motion comprising a bank of drop wires, a depressible indicating bar for said drop wires, a pair of rollers mounted beneath said drop wires, means to actuate said rollers to engage and draw downward a fallen drop wire, thereby depressing said bar, and loom stopping devices controlled by said bar, said rollers being formed of resilient material and being` mounted for yielding movement toward and from each other.

10. A warp stop motion comprising drop wires, a depressible indicating bar for each bank of drop wires, a pair of rollers mounted beneath said drop wires, means to actuate said rollers to engage and draw Copies of this patent may be obtained for ve cents each, by addressing the downward a fallen drop wire, thereby depressing the associated indicating bar, and loom stopping devices controlled by said bar, said drop wires having their lower ends roughened, whereby said rollers may exert a stronger pull upon said wires and indieating bar.

1l. A warp stop motion having, in combination, a plurality of drop wires, poweractuated mechanical devices effective to engage a drop wire upon the breaking of its supporting warp thread and to pull said wire forcibly downward, loom stopping mechanism, and a controlling member for said mechanism directly engaged by and movable downwardly with a fallen drop wire. l

In testimony whereof I have hereunto affixed In si ature.

y gn EPPA H. RYON.

Commissioner of Patents,

Washington, D. G. 

